Check for updates and update
lazarus / 67-Windows

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Hobbit1972 · 2023-06-08 13:08

Hi,

I'd like to implement a check fpr updates and update the program -
would there be a viable way to do so?

Thx

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dseligo · 2023-06-08 14:32

For Lazarus there is LazAutoUpdater
(https://wiki.freepascal.org/LazAutoUpdater). I don't know if it can
work in a pure FPC program.

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Thaddy · 2023-06-08 14:43

It will probably work, but it has no proper roll-back features:
1. stopping the update while running does not always work (from the
zip phase onwards)
2. there is no way to recover from a successfull update, but a non-
running updated application
3. frankly there is no roll-back at all

Therefor I can not recommend it in the state I last examined it.

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lainz · 2023-06-08 20:27

Quote from: Hobbit1972 on June 08, 2023, 03:08:50 pmHi,

I'd like to implement a check fpr updates and update the program -
would there be a viable way to do so?

Thx

Do as Notepad++. It downloads an installer and runs it, then closes
the main process, then you can upgrade with a full installer.

The installer is made with Inno Setup.

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Hobbit1972 · 2023-06-09 04:52

Thank you for your thoughts!

Quote from: dseligo on June 08, 2023, 04:32:22 pmFor Lazarus there is
LazAutoUpdater (https://wiki.freepascal.org/LazAutoUpdater). I don't
know if it can work in a pure FPC program.

As I'm writing a GUI-program, that would be okay. I'll have a closer
look.


Quote from: Thaddy on June 08, 2023, 04:43:16 pmIt will probably work,
but it has no proper roll-back features:
1. stopping the update while running does not always work (from the
zip phase onwards)
2. there is no way to recover from a successfull update, but a non-
running updated application
3. frankly there is no roll-back at all

Therefor I can not recommend it in the state I last examined it.

I'll ponder this point, too.


Quote from: lainz on June 08, 2023, 10:27:12 pmDo as Notepad++. It
downloads an installer and runs it, then closes the main process, then
you can upgrade with a full installer.

The installer is made with Inno Setup.

This sounds interesting - I'll give it a try.

In every case I have to switch from ini-file in program directory to
either registry usage or ini-file in appdata

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KodeZwerg · 2023-06-09 05:43

Quote from: Hobbit1972 on June 09, 2023, 06:52:33 amIn every case I
have to switch from ini-file in program directory to either registry
usage or ini-file in appdata 
I do not understand why you need that to update your software, I
personal never used any pre-made component/code that does do this, I
download from internet a small xml file, in that file is the current
version written, compare it to installed version, either update or not
(depending on my own needs I either create backups for roll-backs
first or straight replace files).